A few years ago I wrote to ARB in Australia and they said the light duty springs are meant as a factory replacement to improve the ride.
Ya she is aware.... thats why I was looking into the medium duty kit.... more then likely that is the route I am going to take and pray the sway bars help with leaning during turns or crazy swaying during highway driving, and nose diving during braking.
How much stink bug do you like on your cruisers? I guarantee if you put OME medium front springs on a 62 you will end up with quite a bit of forward rake. The medium springs just don't work on a 62.